We should only believe in God through our Lord Jesus Christ. The Lord Jesus Christ is the Teacher whom God commanded that we should listen to. We are not to listen to any other teacher, we should only listen to God alone.
God does not speak through everything and everyone. God has set out the channels which He will speak to us. The Bible says that in times pass, God spoke to our fathers through angels and many other medium. But in these days, God has chosen to speak to us through his Son whom He has chosen heir of all things.
The Lord Jesus Christ is the only one we should listen to. We should not listen to ancestors. Ancestors will lead us astray. Ancestors are not true spirits. These are evil spirits speaking to people in the name of ancestors. Let us listen to the Lord through the Word of God. The Holy Spirit is our Teacher. He is to teach us all things and to bring all things to our remembrance.